Dennis Fridrich
Tech Lead at Freelancer
Prague, Prague, Czechia
Summary
👤
Senior🎓
Top SchoolDennis Fridrich is a hands-on tech lead and entrepreneur with over 15 years of experience building and leading teams to deliver user-focused web apps, CMSs and CRM systems. Based in Prague, he specializes in PHP/Symfony back-ends, modern front-end stacks (Vue, Bootstrap, Webpack) and cloud-native deployments—currently driving a Drupal-to-Symfony migration at Czech Radio with Kubernetes. He founded and still runs SEPIA SOFT and co-owns a printing business, combining product-minded engineering with real-world operational experience for public and enterprise clients. A long-time freelancer since 1999, Dennis has shipped 100+ sites and systems and contributes to open-source (notably adding Czech holiday support to the popular Yasumi PHP library), reflecting strong attention to correctness and test automation. Colleagues know him for balancing people leadership with deep technical craft and an appetite for integrating hardware and home automation interests into software projects.
12 years of coding experience
14 years of employment as a software developer
Obchodní podnikatel a manažer, Obchodní podnikatel a manažer at Soukromá střední odborná podnikatelská škola s.r.o.nedokončeno, Purchasing, Procurement/Acquisitions and Contracts Management, nedokončeno, Purchasing, Procurement/Acquisitions and Contracts Management at Vysoká škola báňská - Technická univerzita Ostravanedokončeno, Aplikovaná informatika, nedokončeno, Aplikovaná informatika at Vysoká škola manažerské informatiky a ekonomiky - Praha
Czech, English, German, French, Spanish
Github Skills (8)
calculator10
unit-testing10
php10
calculation10
cal10
calc10
phpunit9
api8
Programming languages (8)
Github contributions (5)
azuyalabs/yasumi
May 2016 - May 2016
The easy PHP Library for calculating holidays
Role in this project:
Back-end Developer & QA Engineer / Test Automation Engineer
Back-end Developer & QA Engineer / Test Automation EngineerContributions:7 commits, 1 PR, 2 comments in 3 days
Contributions summary:Dennis primarily contributed to the `yasumi` library by adding support for Czech Republic holidays. This involved creating a `CzechRepublic` provider class and associated test files. The contributions included defining national holidays, implementing methods for calculating specific holiday dates, and writing comprehensive unit tests to verify the correct functionality of the holiday calculations. The user's work focused on extending the library's functionality and ensuring its reliability through thorough testing.
apicalculationsphpcalculate-holidaysphp-library
dfridrich/symfony-docs
Apr 2016 - Dec 2023
The Symfony documentation
Contributions:7 pushes, 4 branches in 7 years 9 months
bundlephpsymfony-bundlesymfony
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